roll forward: Make data members of CommonFields be private so that it's easier…

roll forward: Make data members of CommonFields be private so that it's easier to change how we store this information internally.

PiperOrigin-RevId: 544732832
Change-Id: I0c9a30f18edc71b3c7fffe94e2002ff6c52050f8

absl/container/internal/raw_hash_set.cc

@@ -15,6 +15,7 @@
 #include "absl/container/internal/raw_hash_set.h"
 #include "absl/container/internal/raw_hash_set.h"
 
 
 #include <atomic>
 #include <atomic>
+#include <cassert>
 #include <cstddef>
 #include <cstddef>
 #include <cstring>
 #include <cstring>
 
 
@@ -130,8 +131,8 @@ static inline void* PrevSlot(void* slot, size_t slot_size) {
 void DropDeletesWithoutResize(CommonFields& common,
 void DropDeletesWithoutResize(CommonFields& common,
                               const PolicyFunctions& policy, void* tmp_space) {
                               const PolicyFunctions& policy, void* tmp_space) {
   void* set = &common;
   void* set = &common;
-  void* slot_array = common.slots_;
-  const size_t capacity = common.capacity_;
+  void* slot_array = common.slots_ptr();
+  const size_t capacity = common.capacity();
   assert(IsValidCapacity(capacity));
   assert(IsValidCapacity(capacity));
   assert(!is_small(capacity));
   assert(!is_small(capacity));
   // Algorithm:
   // Algorithm:
@@ -150,7 +151,7 @@ void DropDeletesWithoutResize(CommonFields& common,
   //       swap current element with target element
   //       swap current element with target element
   //       mark target as FULL
   //       mark target as FULL
   //       repeat procedure for current slot with moved from element (target)
   //       repeat procedure for current slot with moved from element (target)
-  ctrl_t* ctrl = common.control_;
+  ctrl_t* ctrl = common.control();
   ConvertDeletedToEmptyAndFullToDeleted(ctrl, capacity);
   ConvertDeletedToEmptyAndFullToDeleted(ctrl, capacity);
   auto hasher = policy.hash_slot;
   auto hasher = policy.hash_slot;
   auto transfer = policy.transfer;
   auto transfer = policy.transfer;
@@ -210,11 +211,11 @@ void DropDeletesWithoutResize(CommonFields& common,
 
 
 void EraseMetaOnly(CommonFields& c, ctrl_t* it, size_t slot_size) {
 void EraseMetaOnly(CommonFields& c, ctrl_t* it, size_t slot_size) {
   assert(IsFull(*it) && "erasing a dangling iterator");
   assert(IsFull(*it) && "erasing a dangling iterator");
-  --c.size_;
-  const auto index = static_cast<size_t>(it - c.control_);
-  const size_t index_before = (index - Group::kWidth) & c.capacity_;
+  c.set_size(c.size() - 1);
+  const auto index = static_cast<size_t>(it - c.control());
+  const size_t index_before = (index - Group::kWidth) & c.capacity();
   const auto empty_after = Group(it).MaskEmpty();
   const auto empty_after = Group(it).MaskEmpty();
-  const auto empty_before = Group(c.control_ + index_before).MaskEmpty();
+  const auto empty_before = Group(c.control() + index_before).MaskEmpty();
 
 
   // We count how many consecutive non empties we have to the right and to the
   // We count how many consecutive non empties we have to the right and to the
   // left of `it`. If the sum is >= kWidth then there is at least one probe
   // left of `it`. If the sum is >= kWidth then there is at least one probe
@@ -226,26 +227,26 @@ void EraseMetaOnly(CommonFields& c, ctrl_t* it, size_t slot_size) {
 
 
   SetCtrl(c, index, was_never_full ? ctrl_t::kEmpty : ctrl_t::kDeleted,
   SetCtrl(c, index, was_never_full ? ctrl_t::kEmpty : ctrl_t::kDeleted,
           slot_size);
           slot_size);
-  c.growth_left() += (was_never_full ? 1 : 0);
+  c.set_growth_left(c.growth_left() + (was_never_full ? 1 : 0));
   c.infoz().RecordErase();
   c.infoz().RecordErase();
 }
 }
 
 
 void ClearBackingArray(CommonFields& c, const PolicyFunctions& policy,
 void ClearBackingArray(CommonFields& c, const PolicyFunctions& policy,
                        bool reuse) {
                        bool reuse) {
-  c.size_ = 0;
+  c.set_size(0);
   if (reuse) {
   if (reuse) {
     ResetCtrl(c, policy.slot_size);
     ResetCtrl(c, policy.slot_size);
-    c.infoz().RecordStorageChanged(0, c.capacity_);
+    c.infoz().RecordStorageChanged(0, c.capacity());
   } else {
   } else {
     void* set = &c;
     void* set = &c;
-    (*policy.dealloc)(set, policy, c.control_, c.slots_, c.capacity_);
-    c.control_ = EmptyGroup();
+    (*policy.dealloc)(set, policy, c.control(), c.slots_ptr(), c.capacity());
+    c.set_control(EmptyGroup());
     c.set_generation_ptr(EmptyGeneration());
     c.set_generation_ptr(EmptyGeneration());
-    c.slots_ = nullptr;
-    c.capacity_ = 0;
-    c.growth_left() = 0;
+    c.set_slots(nullptr);
+    c.set_capacity(0);
+    c.set_growth_left(0);
     c.infoz().RecordClearedReservation();
     c.infoz().RecordClearedReservation();
-    assert(c.size_ == 0);
+    assert(c.size() == 0);
     c.infoz().RecordStorageChanged(0, 0);
     c.infoz().RecordStorageChanged(0, 0);
   }
   }
 }
 }